I'm very fond of polypro long johns, and a layer of fleece over that when called for, then a windproof/waterproof layer on top. When wearing hippers, I wear a pair of cargo shorts over my polypro or fleece.
I have never had good luck with Goretex or any similar clothing, they always end up getting wet with me. If it's really raining, you need to figure you will get wet, either from the rain or presperation, so the key is staying warm. I use a milsurp poncho for my rain layer, it makes a nice groundcloth or makeshift shelter as well.
I carry a spair set of polypro long johns and socks in a gallon ziplock bag to have a dry pair to change into should I get truly drenched.
Don't forget a pair of shoes or flipflops for around camp use.